feat: implements defender

src/types/creeps.ts

@@ -27,6 +27,9 @@ export const CreepRoles = {
         handler: HarvesterHandler,
         priority: 3,
     },
+    defender: {
+        name: 'defender',
+    }
 } satisfies Record<string, RoleDefinition>;
 
 export type CreepRole = keyof typeof CreepRoles;